# Computer Graphics NPTEL Assignment 3 Answers

Course Name: Computer Graphics NPTEL

#### These are the solution of Computer Graphics NPTEL Assignment 3 Answers

Q1) At the time of defining the objects, its shape, size, and position is not important.

a. True

b. False

Q2) In order to obtain composite matrix we multiply basic matrix in sequence. In this case

a. we follow right-to-left rule in forming the sequence

b. we follow left-to-right rule in forming the sequence

c. we can follow either right-to-left or left-to-right rule in forming the sequence

d. any order can be considered in forming the sequence, as we are multiplying the matrices

Answer: a. we follow right-to-left rule in forming the sequence

Q3) We can create a _______ grid to represent a 3D space.

a. Pixel

b. Voxel

c. Frequency

d. Time

These are the solution of Computer Graphics NPTEL Assignment 3 Answers

Q4) With shearing transformation, we cannot change shape of an object.

a. True

b. False

Q5) When same scaling factor is used along both X and Y direction it is called

a. Uniform scaling

b. Differential scaling

c. Equilateral scaling

d. Perpendicular scaling

Answer: a. Uniform scaling

Q6) In 3D shearing there are _________ shearing factors.

a. 3

b. 6

c. 9

d. 12

These are the solution of Computer Graphics NPTEL Assignment 3 Answers

Q7) Matrix multiplication is commutative. So any sequence of the multiple geometric transformation will lead to same result.

a. True

b. False

Q8) In homogeneous coordinate system, any point of the form Ph(xh,yh,0) is considered to be at _____.

a. Origin

b. Infinity

Q9) BSP stands for ________.

a. Binary Sweep Partitioning

b. Best Space Partitioning

c. Binary Space Partitioning

d. Best Sweep Partitioning

Answer: c. Binary Space Partitioning

These are the solution of Computer Graphics NPTEL Assignment 3 Answers

Q10) In scaling we multiply the object coordinates by some scalers, called ___________.

a. Scaling index

b. Scaling factor

Answer: b. Scaling factor

These are the solution of Computer Graphics NPTEL Assignment 3 Answers

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